Color the map by using a maximum of four colors so that no t

Color the map by using a maximum of four colors so that no two regions with a common border have the same color. Choose the correct response below. Click to select your answer.

Solution

Since maximum of 4 colours only to be used, picture 2 is wrong since it used 5 colours (pink, red, yellow, light blue and green).

picture 3 is wrong since 1 and 4 with the same border used the same red colour.

Picture 1 satisfies all the regions for the condition and hence picture 3 is the answer.